Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens including: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive power; a fourth lens having a negative refractive power, a fifth lens having a positive power; a sixth lens having a negative refractive power; wherein the camera optical lens satisfies conditions: −10.00≤f6/f5≤−2.50; 3.00≤d8/d10≤10.00; where f5 and f6 respectively denotes a focal length of the fifth lens and the sixth lens, d8 denotes an on-axis distance from the image-side surface of the fourth lens to the object-side surface of the fifth lens, d10 denotes an on-axis distance from the image-side surface of the fifth lens to the object-side surface of the sixth lens. The camera optical lens in the present disclosure satisfies a design requirement of large aperture, long focal length and ultra-thinness while having good optical performance.

TECHNICAL FIELD

The present disclosure relates to the field of optical lenses, inparticular, to a camera optical lens suitable for handheld devices, suchas smart phones and digital cameras, and imaging devices, such asmonitors or PC lenses.

BACKGROUND

Recently, as smart phones spring up, a requirement of thinner andsmaller camera lenses is rising day by day. A general camera lensusually employs charge-coupled device (CCD) or complementary metal-oxidesemiconductor sensor (CMOS sensor) as photosensitive device thereof. Dueto the improvement of semiconductor manufacturing technology, the pixelsize of the photosensitive device is reduced. In addition to currentdevelopment trend of electronic products going towards better functionsand thinner and smaller dimensions, miniature camera lenses with goodimaging quality are becoming a mainstream in the market.

In order to obtain better imaging quality, a lens that is traditionallyequipped in a mobile phone camera adopts a three-piece or four-piecelens structure. However, with the development of technology and thediversification of user demand, the pixel area of the photosensitivedevice is decreasing and the imaging quality of the system isincreasing. Accordingly, six-piece lens structure gradually appears inthe lens design. Although a lens as such has good optical performance,the lens is fairly unreasonable in terms of setting of optical power,lens shape and distance between lenses, rendering that the lensstructure with good optical performance cannot satisfy a designrequirement of large aperture, long focal length and ultra-thinness.

SUMMARY

To address the above issues, the present disclosure seeks to provide acamera optical lens that satisfies a design requirement of largeaperture, long focal length and ultra-thinness while having good opticalperformance.

The technical solutions of the present disclosure are as follows:

A camera optical lens with six lenses including, from an object side toan image side: a first lens having a positive refractive power; a secondlens having a negative refractive power; a third lens having a positivepower; a fourth lens having a negative refractive power, a fifth lenshaving a positive power; and a sixth lens having a negative refractivepower; wherein the camera optical lens satisfies following conditions:−10.00≤f6/f5≤−2.50; and3.00≤d8/d10≤10.00;

where f5 denotes a focal length of the fifth lens; f6 denotes a focallength of the sixth lens; d8 denotes an on-axis distance from theimage-side surface of the fourth lens to the object-side surface of thefifth lens; and d10 denotes an on-axis distance from the image-sidesurface of the fifth lens to the object-side surface of the sixth lens.

As an improvement, the camera optical lens further satisfies thefollowing condition:2.00≤(R7+R8)/(R7−R8)≤15.00;

where R7 denotes a central curvature radius of an object-side surface ofthe fourth lens; and R8 denotes a central curvature radius of animage-side surface of the fourth lens.

As an improvement, the camera optical lens further satisfies thefollowing condition:5.00≤f4/f≤−1.50;

where f denotes a focal length of the camera optical lens; and f4denotes a focal length of the fourth lens.

As an improvement, the camera optical lens further satisfies thefollowing condition:0.21≤f1/f≤0.65;−1.05≤(R1+R2)/(R1−R2)≤−0.34; and0.07≤d1/TTL≤0.22;

where f denotes a focal length of the camera optical lens; f1 denotes afocal length of the first lens; R1 denotes a central curvature radius ofan object-side surface of the first lens; R2 denotes a central curvatureradius of an image-side surface of the first lens; d1 denotes an on-axisthickness of the first lens; and TTL denotes a total optical length ofthe camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions:−1.04≤f2/f≤−0.34;1.35≤(R3+R4)/(R3−R4)≤4.22; and0.02≤d3/TTL≤0.07;

where f denotes a focal length of the camera optical lens; f2 denotes afocal length of the second lens; R3 denotes a central curvature radiusof an object-side surface of the second lens; R4 denotes a centralcurvature radius of an image-side surface of the second lens; d3 denotesan on-axis thickness of the second lens; and TTL denotes a total opticallength of the camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions:1.59≤f3/f≤13.08;−0.23≤(R5+R6)/(R5−R6)≤1.17; and0.03≤d5/TTL≤0.09;

where f denotes a focal length of the camera optical lens; f3 denotes afocal length of the third lens; R5 denotes a central curvature radius ofan object-side surface of the third lens; R6 denotes a central curvatureradius of an image-side surface of the third lens; d5 denotes an on-axisthickness of the third lens; and TTL denotes a total optical length ofthe camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions:0.01≤d7/TTL≤0.10;

where d7 denotes an on-axis thickness of the fourth lens; and TTLdenotes a total optical length of the camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions:0.53≤f5/f≤1.85;0.63≤(R9+R10)/(R9−R10)≤2.70; and0.05≤d9/TTL≤0.16;

where f denotes a focal length of the camera optical lens; R9 denotes acentral curvature radius of an object-side surface of the fifth lens;R10 denotes a central curvature radius of an image-side surface of thefifth lens; d9 denotes an on-axis thickness of the fifth lens; and TTLdenotes a total optical length of the camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing conditions:−23.56≤f6/f≤−1.78;−22.86≤(R11+R12)/(R11−R12)≤−3.95; and0.05≤d11/TTL≤0.16;

where f denotes a focal length of the camera optical lens; R11 denotes acentral curvature radius of an object-side surface of the sixth lens;R12 denotes a central curvature radius of an image-side surface of thesixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length of the camera optical lens.

As an improvement, the camera optical lens further satisfies thefollowing condition:TTL/IH≤2.35;

where TTL denotes a total optical length of the camera optical lens; andIH denotes an image height of the camera optical lens.

The present disclosure is advantageous in: the camera optical lens inthe present disclosure has good optical performance and hascharacteristics of large aperture, long focal length and ultra-thinness,and is especially fit for WEB camera lenses and mobile phone camera lensassemblies composed by such camera elements as CCD and CMOS for highpixels.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1 .

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1 .

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1 .

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5 .

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5 .

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5 .

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9 .

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9 .

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9 .

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the drawings, the present disclosure provides a cameraoptical lens 10. FIG. 1 shows the camera optical lens 10 of Embodiment 1of the present disclosure, the camera optical lens 10 includes sixlenses. Specifically, the camera optical lens 10 includes, from anobject side to an image side: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixthlens L6. An optical filter GF can be further included and arrangedbetween the sixth lens L6 and the image surface Si.

In this embodiment, the first lens L1 has a positive refractive power,the second lens L2 has a negative refractive power, the third lens L3has a positive refractive power, the fourth lens L4 has a negativerefractive power, the fifth lens L5 has a positive refractive power, andthe sixth lens L6 has a negative refractive power.

In this embodiment, the first lens L1, the second lens L2, the thirdlens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 aremade of plastic. In other embodiments, each lens can be made of othermaterials.

In this embodiment, a focal length of the fifth lens L5 is defined asf5, a focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies the following condition:−10.00≤f6/f5≤−2.50. This condition specifies a ratio between the focallength f6 of the sixth lens L6 and the focal length f5 of the fifth lensL5, which facilitates improving imaging quality.

An on-axis distance from the image-side surface of the fourth lens L4 tothe object-side surface of the fifth lens L5 is defined as d8, anon-axis distance from the image-side surface of the fifth lens L5 to theobject-side surface of the sixth lens L6 is defined as d10, and thecamera optical lens 10 further satisfies the following condition:3.00≤d8/d10≤10.00. This condition specifies a ratio between the on-axisdistance d8 from the image-side surface of the fourth lens L4 to theobject-side surface of the fifth lens L5, and the on-axis distance d10from the image-side surface of the fifth lens L5 to the object-sidesurface of the sixth lens L6. In case of a ration of d8 and d10satisfying this condition, the place of the fifth lens L5 is effectivelydistributed, thereby facilitating lens assembling. Preferably, thecamera optical lens 10 further satisfies the following condition:3.01≤d8/d10≤9.97.

A central curvature radius of an object-side surface of the fourth lensL4 is defined as R7, a central curvature radius of an image-side surfaceof the fourth lens L4 is defined as R8, and the camera optical lens 10further satisfies the following condition: 2.00≤(R7+R8)/(R7−R8)≤15.00.This condition specifies a shape of the fourth lens L4, whicheffectively correct field curvature and improving imaging quality.

A focal length of the camera optical lens 10 is defined as f, a focallength of the fourth lens L4 is defined as f4, and the camera opticallens 10 further satisfies the following condition: 5.00≤f4/f≤−1.50. Thiscondition specifies a ratio between the focal length f4 of the fourthlens L4 and the focal length f of the camera optical lens 10, whichfacilitates correcting aberration and improving imaging quality.

In this embodiment, the first lens L1 includes an object-side surfacebeing convex in a paraxial region and an image-side surface being convexin the paraxial region.

A focal length of the camera optical lens 10 is defined as f, a focallength of the first lens L1 is defined as f1, and the camera opticallens 10 further satisfies the following condition: 0.21≤f1/f≤0.65. Thiscondition specifies the positive refractive power of the first lens L1properly, which facilitates realizing ultra-thinness and decreasing theaberration of the optical system. Preferably, the camera optical lens 10further satisfies the following condition: 0.34≤f1/f≤0.52.

A central curvature radius of an object-side surface of the first lensL1 is defined as R1, a central curvature radius of an image-side surfaceof the first lens L1 is defined as R2, and the camera optical lens 10further satisfies the following condition: −1.05≤(R1+R2)/(R1−R2)≤−0.34.This condition specifies a shape of the first lens L1 reasonably,thereby effectively correcting spherical aberration of the cameraoptical lens 10. Preferably, the camera optical lens 10 furthersatisfies the following condition: −0.65≤(R1+R2)/(R1−R2)≤−0.43.

An on-axis thickness of the first lens L1 is defined as d1, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.07≤d1/TTL≤0.22, within a range of which it facilitates realizingultra-thinness. Preferably, the camera optical lens 10 further satisfiesthe following condition: 0.11≤d1/TTL≤0.17.

In this embodiment, the second lens L2 includes an object-side surfacebeing convex in a paraxial region and an image-side surface beingconcave in the paraxial region.

A focal length of the camera optical lens 10 is defined as f, a focallength of the second lens L2 is defined as f2, and the camera opticallens 10 further satisfies the following condition: −1.04≤f2/f≤−0.34.This condition specifies the negative refractive power of the secondlens L2 in a reasonable range, which facilitates correcting theaberration of the optical system. Preferably, the camera optical lens 10further satisfies the following condition: −0.65≤f2/f≤−0.42.

A central curvature radius of an object-side surface of the second lensL2 is defined as R3, a central curvature radius of an image-side surfaceof the second lens L2 is defined as R4, and the camera optical lens 10further satisfies the following condition: 1.35≤(R3+R4)/(R3−R4)≤4.22.Within this condition, which specifies a shape of the second lens L2, itfacilitates correcting the on-axis aberration along with the developmentof the lenses towards ultra-thinness. Preferably, the camera opticallens 10 satisfies the following condition: 2.16≤(R3+R4)/(R3−R4)≤3.38.

An on-axis thickness of the second lens L2 is defined as d3, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.02≤d3/TTL≤0.07. Within this condition, ultra-thinness can be realized.Preferably, the camera optical lens 10 satisfies the followingcondition: 0.04≤d3/TTL≤0.05.

In this embodiment, the third lens L3 includes an object-side surfacebeing convex in a paraxial region and an image-side surface being convexin the paraxial region.

A focal length of the camera optical lens 10 is defined as f, a focallength of the third lens L3 is defined as f3, and the camera opticallens 10 further satisfies the following condition: 1.59≤f3/f≤13.08. Witha reasonable distribution of the refractive power, the system has betterimaging quality and lower sensitivity. Preferably, the camera opticallens 10 satisfies the following condition: 2.55≤f3/f≤10.46.

A central curvature radius of an object-side surface of the third lensL3 is defined as R5, a central curvature radius of an image-side surfaceof the third lens L3 is defined as R6, and the camera optical lens 10further satisfies the following condition: −0.23≤(R5+R6)/(R5−R6)≤1.17.This condition specifies a shape of the third lens L3, within a range ofwhich it helps alleviate a deflection degree of the light passingthrough the lens, and effectively reduce an aberration. Preferably, thecamera optical lens 10 satisfies the following condition:−0.14≤(R5+R6)/(R5−R6)≤0.94.

An on-axis thickness of the third lens L3 is defined as d5, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.03≤d5/TTL≤0.09, within a range of which it facilitates realizingultra-thinness. Preferably, the camera optical lens 10 satisfies thefollowing condition: 0.05≤d5/TTL≤0.07.

In this embodiment, the fourth lens L4 includes an object-side surfacebeing convex in a paraxial region and an image-side surface beingconcave in the paraxial region.

An on-axis thickness of the fourth lens L4 is defined as d7, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.01≤d7/TTL≤0.10, within a range of which it facilitates realizingultra-thinness. Preferably, the camera optical lens 10 satisfies thefollowing condition: 0.02≤d7/TTL≤0.08.

In this embodiment, the fifth lens L5 includes an object-side surfacebeing concave in a paraxial region and an image-side surface beingconvex in the paraxial region.

A focal length of the camera optical lens 10 is defined as f, a focallength of the fifth lens L5 is defined as f5, and the camera opticallens 10 further satisfies the following condition: 0.53≤f5/f≤1.85, whichspecifies the fifth lens L5 so as to make a light angle of the cameraoptical lens 10 to be gentle and reduce tolerance sensitivity.Preferably, the camera optical lens 10 satisfies the followingcondition: 0.86≤f5/f≤1.48.

A central curvature radius of an object-side surface of the fifth lensL5 is defined as R9, a central curvature radius of an image-side surfaceof the fifth lens L5 is defined as R10, and the camera optical lens 10further satisfies the following condition: 0.63≤(R9+R10)/(R9−R10)≤2.70.Within this condition, which specifies a shape of the fifth lens L5, itfacilitates correcting the off-axis aberration along with thedevelopment of the lenses towards ultra-thinness. Preferably, the cameraoptical lens 10 satisfies the following condition:1.01≤(R9+R10)/(R9−R10)≤2.16.

An on-axis thickness of the fifth lens L5 is defined as d9, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.05≤d9/TTL≤0.16, within a range of which it facilitates realizingultra-thinness. Preferably, the camera optical lens 10 satisfies thefollowing condition: 0.08≤d9/TTL≤0.13.

In this embodiment, the sixth lens L6 includes an object-side surfacebeing concave in a paraxial region and an image-side surface beingconvex in the paraxial region.

A focal length of the camera optical lens 10 is defined as f, a focallength of the sixth lens L6 is defined as f6, and the camera opticallens 10 further satisfies the following condition: −23.56≤f6/f≤−1.78.With a reasonable distribution of the refractive power, the system hasbetter imaging quality and lower sensitivity. Preferably, the cameraoptical lens 10 satisfies the following condition: −14.32≤f6/f≤−2.23.

A central curvature radius of an object-side surface of the sixth lensL6 is defined as R11, a central curvature radius of an image-sidesurface of the sixth lens L6 is defined as R12, and the camera opticallens 10 further satisfies the following condition:−22.86≤(R11+R12)/(R11−R12)≤−3.95. Within this condition, which specifiesa shape of the sixth lens L6, the development of the lenses towardsultra-thinness would facilitate correcting the off-axis aberration.Preferably, the camera optical lens 10 satisfies the followingcondition: −14.29≤(R11+R12)/(R11−R12)≤−4.93.

An on-axis thickness of the sixth lens L6 is defined as d11, a totaloptical length of the camera optical lens 10 is defined as TTL, and thecamera optical lens 10 further satisfies the following condition:0.05≤d11/TTL≤0.16, within a range of which it facilitates realizingultra-thinness. Preferably, the camera optical lens 10 satisfies thefollowing condition: 0.08≤d11/TTL≤0.13.

In this embodiment, an image height of the camera optical lens 10 isdefined as IH, a total optical length of the camera optical lens 10 isdefined as TTL, and the camera optical lens 10 further satisfies thefollowing condition: TTL/IH≤2.35, thereby facilitating realizingultra-thinness.

In this embodiment, an image height of the camera optical lens 10 isdefined as IH, a focal length of the camera optical lens 10 is definedas f, and the camera optical lens 10 further satisfies the followingcondition: f/IH≥2.27. Accordingly, the camera optical lens 10 has longfocal length.

In this embodiment, an F number of the camera optical lens 10 is definedas Fno, and the camera optical lens 10 further satisfies the followingconditions: Fno≤2.26, so that the camera optical lens 10 has a largeaperture and good imaging performance.

When satisfying the above conditions, the camera optical lens 10 havegood optical performance and satisfy the design requirement of largeaperture, long focal length and ultra-thinness. According to thecharacteristics of the camera optical lens 10, the camera optical lens10 is especially fit for WEB camera lenses and mobile phone camera lensassemblies composed by such camera elements as CCD and CMOS for highpixels.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,central curvature radius, on-axis thickness, inflexion point position,and arrest point position are all in units of mm.

TTL: Total optical length (an on-axis distance from the object sidesurface of the first lens L1 to the image surface Si of the cameraoptical lens along the optical axis) in mm.

FNO: ratio of an effective focal length and an entrance pupil diameterof the camera optical lens.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of each lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R D nd vd S1 ∞ d0 = −0.831 R1 2.690 d1 = 1.339 nd1 1.5444 v155.82 R2 −8.390 d2 = 0.139 R3 3.098 d3 = 0.411 nd2 1.6400 v2 23.54 R41.449 d4 = 0.398 R5 83.211 d5 = 0.552 nd3 1.5444 v3 55.82 R6 −32.774 d6= 0.433 R7 2.446 d7 = 0.265 nd4 1.5444 v4 55.82 R8 1.997 d8 = 2.651 R9−17.937 d9 = 0.913 nd5 1.6400 v5 23.54 R10 −5.112 d10 =  0.267 R11−2.446 d11 =  0.990 nd6 1.5346 v6 55.69 R12 −2.915 d12 =  0.429 R13 ∞d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.213

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of a center of an optical surface;

R1: central curvature radius of the object-side surface of the firstlens L1;

R2: central curvature radius of the image-side surface of the first lensL1;

R3: central curvature radius of the object-side surface of the secondlens L2;

R4: central curvature radius of the image-side surface of the secondlens L2;

R5: central curvature radius of the object-side surface of the thirdlens L3;

R6: central curvature radius of the image-side surface of the third lensL3;

R7: central curvature radius of the object-side surface of the fourthlens L4;

R8: central curvature radius of the image-side surface of the fourthlens L4;

R9: central curvature radius of the object-side surface of the fifthlens L5;

R10: central curvature radius of the image-side surface of the fifthlens L5;

R11: central curvature radius of the object-side surface of the sixthlens L6;

R12: central curvature radius of the image-side surface of the sixthlens L6;

R13: central curvature radius of an object-side surface of the opticalfilter GF;

R14: central curvature radius of an image-side surface of the opticalfilter GF;

d: on-axis thickness of a lens or on-axis distance between neighboringlenses;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image-side surface of the optical filterGF to the image surface Si;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6 abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface coefficients of each lens of the cameraoptical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 R1 −2.7065E−01  2.0091E−03 −1.0795E−03  3.3949E−04  4.6214E−06−1.7686E−05  R2 −9.7753E+01  1.1086E−02 −8.1717E−04  −2.1114E−04  3.9116E−05 7.9931E−06 R3 −1.5590E+01  3.1015E−03 1.0335E−03−2.2385E−04  −6.6261E−05 7.5129E−05 R4 −3.9331E+00  1.9755E−024.0458E−03 1.3816E−03  3.0419E−04 2.0229E−04 R5  2.0000E+02  3.1350E−021.9361E−02 4.3637E−04  1.4224E−04 −4.5214E−04  R6  6.9510E−03 3.9488E−02 −5.1511E−03  −1.3240E−03   1.0209E−04 1.9791E−04 R7−1.4303E+01 −7.2840E−02 1.1287E−02 3.9443E−03 −7.5827E−04 −7.5450E−04 R8 −8.7248E+00 −4.6870E−02 8.3136E−03 2.1323E−03 −7.2561E−04−1.6402E−04  R9  3.0767E+01 −6.1149E−03 7.6152E−04 −4.1612E−04  6.7178E−05 −6.5045E−06  R10  6.7429E−01 −3.8503E−03 5.1498E−04−1.1889E−04  −7.2261E−07 2.8004E−06 R11 −2.4924E+00 −2.4524E−03−1.6776E−03  8.2885E−04 −1.3281E−04 1.1655E−05 R12 −7.0143E+00−1.0534E−02 −7.5800E−04  4.8337E−04 −7.7291E−05 6.5054E−06 Coniccoefficient Aspheric surface coefficients k A14 A16 A18 A20 R1−2.7065E−01 −1.5590E−06 6.5125E−07  2.1955E−07 −5.0321E−08 R2−9.7753E+01  8.2773E−07 −4.8452E−07  −1.8118E−07  2.5870E−08 R3−1.5590E+01  1.5476E−05 −3.9809E−06  −2.3723E−06  4.3763E−07 R4−3.9331E+00  1.0426E−04 1.4834E−05 −1.8758E−05 −1.9208E−05 R5 2.0000E+02 −2.7307E−05 1.8604E−04  9.8212E−05 −7.8313E−05 R6 6.9510E−03  3.6296E−04 2.3220E−04 −1.8630E−04  0.0000E+00 R7−1.4303E+01 −6.1227E−05 1.1066E−04  6.2804E−05 −2.8578E−05 R8−8.7248E+00  1.5684E−05 1.4294E−05  1.1108E−06 −9.0136E−07 R9 3.0767E+01  2.1178E−08 4.5269E−08  1.9673E−10 −1.3383E−10 R10 6.7429E−01 −4.9798E−07 4.2726E−08 −2.1627E−09  9.2830E−11 R11−2.4924E+00 −6.2031E−07 2.0499E−08 −3.7945E−10  2.5135E−12 R12−7.0143E+00 −3.3191E−07 1.0270E−08 −1.3941E−10  8.2871E−13

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18 and A20 are aspheric surface coefficients.y=(^(x2) /R)/[1+{1−(k+1)(^(x2)/^(R2))^(}1/2)]+A4^(x4) +A6^(x6) +A8^(x8)+A10^(x10) +A12^(x12) +A14^(x14) +A16^(x16) +A18^(x18) +A20^(x20)  (1)

Herein, x donates a vertical distance between a point in the asphericcurve and the optical axis, and y donates an aspheric depth (i.e. avertical distance between the point having a distance of x from theoptical axis and a plane tangent to the vertex on the optical axis ofthe aspheric surface).

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 10 according toEmbodiment 1. P1R1 and P1R2 represent the object-side surface and theimage-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6. The data in the column named“inflexion point position” refer to vertical distances from inflexionpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10. The data in the column named “arrest point position”refer to vertical distances from arrest points arranged on each lenssurface to the optical axis of the camera optical lens 10.

TABLE 3 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 2.015 / P1R2 2 0.695 1.795 P2R1 0 / / P2R21 1.405 / P3R1 1 1.405 / P3R2 0 / / P4R1 1 0.515 / P4R2 1 0.675 / P5R1 12.645 / P5R2 1 2.845 / P6R1 1 1.965 / P6R2 1 3.125 /

TABLE 4 Number(s) of Arrest point arrest points position 1 P1R1 0 / P1R21 1.385 P2R1 0 / P2R2 0 / P3R1 0 / P3R2 0 / P4R1 1 1.055 P4R2 1 1.575P5R1 0 / P5R2 0 / P6R1 1 3.235 P6R2 0

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 435 nm after passing the camera optical lens 10, respectively.FIG. 4 illustrates a field curvature and a distortion with a wavelengthof 555 nm after passing the camera optical lens 10. A field curvature Sin FIG. 4 is a field curvature in a sagittal direction, and T is a fieldcurvature in a tangential direction.

In the subsequent Table 13, various parameters of Embodiments 1, 2 and 3and values corresponding to the parameters specified in the aboveconditions are shown.

As shown in Table 13, Embodiment 1 satisfies the various conditions.

In this Embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 10 is 4.070 mm, an image height of (IH) is 4.000 mm, and afield of view (FOV) in a diagonal direction is 44.00°. Thus, the cameraoptical lens 10 achieves large aperture, long focal length andultra-thinness, the on-axis and off-axis aberration is sufficientlycorrected, thereby achieving excellent optical performance.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

A structure of a camera optical lens 20 according to Embodiment 2 of thepresent disclosure is shown in FIG. 5 .

Table 5 and Table 6 show design data of the camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R D nd vd S1 ∞ d0 = −0.831 R1 2.690 d1 = 1.350 nd1 1.5444 v155.82 R2 −8.480 d2 = 0.154 R3 3.028 d3 = 0.416 nd2 1.6400 v2 23.54 R41.441 d4 = 0.379 R5 28.470 d5 = 0.553 nd3 1.5444 v3 55.82 R6 −35.892 d6= 0.496 R7 15.824 d7 = 0.594 nd4 1.5444 v4 55.82 R8 5.289 d8 = 2.196 R9−48.088 d9 = 0.976 nd5 1.6400 v5 23.54 R10 −5.618 d10 =  0.343 R11−2.523 d11 =  0.984 nd6 1.5346 v6 55.69 R12 −3.549 d12 =  0.587 R13 ∞d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.040

Table 6 shows aspheric surface coefficients of each lens of the cameraoptical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 R1 −2.6176E−01  2.2702E−03 −1.0705E−03  3.4058E−04  4.7971E−06−1.7665E−05  R2 −8.7717E+01  1.1057E−02 −8.1259E−04  −2.1079E−04  3.8929E−05 7.9281E−06 R3 −1.5852E+01  3.0674E−03 1.0387E−03−2.1465E−04  −6.2142E−05 7.6416E−05 R4 −3.9511E+00  2.0049E−024.2534E−03 1.4272E−03  3.0345E−04 1.9725E−04 R5 −5.0000E+02  2.9910E−021.9489E−02 5.0083E−04  1.6808E−04 −4.4212E−04  R6  6.9825E−03 3.5845E−02 −6.0468E−03  −1.3187E−03   2.4433E−04 3.0424E−04 R7−2.4107E+01 −7.4407E−02 1.1733E−02 4.0812E−03 −1.1876E−03 −1.1579E−03 R8 −7.4396E+00 −4.4322E−02 8.7617E−03 1.5773E−03 −7.6411E−04−1.0745E−04  R9  1.5345E+02 −6.7224E−03 6.9494E−04 −4.1937E−04  6.7093E−05 −6.5114E−06  R10  6.8422E−01 −3.3925E−03 4.8808E−04−1.2133E−04  −8.5782E−07 2.7955E−06 R11 −2.2938E+00 −2.5097E−03−1.6727E−03  8.2924E−04 −1.3279E−04 1.1653E−05 R12 −6.2802E+00−1.0690E−02 −7.5853E−04  4.8396E−04 −7.7234E−05 6.5087E−06 Coniccoefficient Aspheric surface coefficients k A14 A16 A18 A20 R1−2.6176E−01 −1.5596E−06 6.4987E−07  2.1901E−07 −5.0497E−08 R2−8.7717E+01  8.1483E−07 −4.8580E−07  −1.8090E−07  2.6107E−08 R3−1.5852E+01  1.5803E−05 −3.9146E−06  −2.3650E−06  4.3542E−07 R4−3.9511E+00  1.0145E−04 1.3771E−05 −1.8967E−05 −1.9168E−05 R5−5.0000E+02 −2.4519E−05 1.8633E−04  9.7852E−05 −7.8710E−05 R6 6.9825E−03  4.1289E−04 2.4239E−04 −1.9728E−04  0.0000E+00 R7−2.4107E+01 −1.3539E−04 2.2350E−04  1.4360E−04 −5.7804E−05 R8−7.4396E+00  3.1261E−05 1.5322E−05  4.4501E−07 −1.1126E−06 R9 1.5345E+02  1.9648E−08 4.5073E−08  1.8582E−10 −1.3276E−10 R10 6.8422E−01 −4.9808E−07 4.2685E−08 −2.1787E−09  8.9370E−11 R11−2.2938E+00 −6.2068E−07 2.0461E−08 −3.8159E−10  2.6768E−12 R12−6.2802E+00 −3.3187E−07 1.0250E−08 −1.4288E−10  3.9097E−13

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 2.015 / P1R2 2 0.705 1.795 P2R1 0 / / P2R21 1.395 / P3R1 1 1.405 / P3R2 0 / / P4R1 2 0.275 1.375 P4R2 1 0.635 /P5R1 1 2.645 / P5R2 1 2.885 / P6R1 1 1.985 / P6R2 1 3.215 /

TABLE 8 Number(s) of Arrest point arrest points position 1 P1R1 0 / P1R21 1.415 P2R1 0 / P2R2 0 / P3R1 0 / P3R2 0 / P4R1 1 0.475 P4R2 1 1.405P5R1 0 / P5R2 0 / P6R1 1 3.305 P6R2 0 /

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 435 nm after passing the camera optical lens 20, respectively.FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20. A fieldcurvature S in FIG. 8 is a field curvature in a sagittal direction, andT is a field curvature in a tangential direction.

As shown in table 13, Embodiment 2 satisfies each condition.

In this embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 20 is 4.063 mm, an image height of (IH) is 4.000 mm, and afield of view (FOV) in the diagonal direction is 44.00°. Thus, thecamera optical lens 20 achieves large aperture, long focal length andultra-thinness, the on-axis and off-axis aberration is sufficientlycorrected, thereby achieving excellent optical performance.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

A structure of a camera optical lens 30 according to Embodiment 3 of thepresent disclosure is shown in FIG. 9 .

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R D nd vd S1 ∞ d0 = −0.808 R1 2.703 d1 = 1.324 nd1 1.5444 v155.82 R2 −8.622 d2 = 0.140 R3 3.185 d3 = 0.410 nd2 1.6400 v2 23.54 R41.463 d4 = 0.397 R5 394.413 d5 = 0.541 nd3 1.5444 v3 55.82 R6 −48.651 d6= 0.418 R7 2.195 d7 = 0.253 nd4 1.5444 v4 55.82 R8 1.920 d8 = 2.257 R9−19.111 d9 = 0.901 nd5 1.6400 v5 23.54 R10 −5.344 d10 =  0.750 R11−2.310 d11 =  1.009 nd6 1.5346 v6 55.69 R12 −2.846 d12 =  0.080 R13 ∞d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.531

Table 10 shows aspheric surface coefficients of each lens of the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 R1 −2.7063E−01  1.9260E−03 −1.0727E−03  3.4118E−04  4.9258E−06−1.7632E−05  R2 −9.8332E+01  1.1052E−02 −8.2200E−04  −2.1154E−04  3.9111E−05 8.0021E−06 R3 −1.6077E+01  3.0378E−03 1.0198E−03−2.2841E−04  −6.7653E−05 7.4758E−05 R4 −3.9348E+00  1.9815E−024.0841E−03 1.4004E−03  3.1284E−04 2.0594E−04 R5  9.9731E+02  3.1657E−021.9263E−02 4.0499E−04  1.3026E−04 −4.5738E−04  R6  5.5146E−03 4.0861E−02 −4.9394E−03  −1.3727E−03   2.5182E−05 1.5207E−04 R7−1.3420E+01 −7.2050E−02 1.1026E−02 4.0443E−03 −7.5068E−04 −7.4738E−04 R8 −9.3854E+00 −5.1251E−02 7.3779E−03 2.0367E−03 −6.8955E−04−1.4225E−04  R9  3.4056E+01 −6.1308E−03 7.1732E−04 −4.1810E−04  6.7578E−05 −6.4425E−06  R10  6.3007E−01 −3.5277E−03 4.8045E−04−1.1480E−04  −2.2094E−07 2.8322E−06 R11 −2.3646E+00 −2.5286E−03−1.6792E−03  8.2882E−04 −1.3279E−04 1.1658E−05 R12 −5.9681E+00−1.0750E−02 −7.6237E−04  4.8373E−04 −7.7237E−05 6.5099E−06 Coniccoefficient Aspheric surface coefficients k A14 A16 A18 A20 R1−2.7063E−01 −1.5494E−06 6.5298E−07  2.1992E−07 −5.0242E−08 R2−9.8332E+01  8.3160E−07 −4.8342E−07  −1.8089E−07  2.5937E−08 R3−1.6077E+01  1.5384E−05 −4.0012E−06  −2.3763E−06  4.3713E−07 R4−3.9348E+00  1.0560E−04 1.5352E−05 −1.8605E−05 −1.9165E−05 R5 9.9731E+02 −2.9804E−05 1.8478E−04  9.7558E−05 −7.8667E−05 R6 5.5146E−03  3.4342E−04 2.2936E−04 −1.8002E−04  0.0000E+00 R7−1.3420E+01 −4.6395E−05 1.1958E−04  6.5519E−05 −2.9112E−05 R8−9.3854E+00  2.1736E−05 1.5110E−05  8.0604E−07 −1.2308E−06 R9 3.4056E+01  2.7918E−08 4.5924E−08  2.5932E−10 −1.2765E−10 R10 6.3007E−01 −4.9649E−07 4.2741E−08 −2.1687E−09  9.1569E−11 R11−2.3646E+00 −6.1998E−07 2.0522E−08 −3.7939E−10  2.1953E−12 R12−5.9681E+00 −3.3165E−07 1.0277E−08 −1.4010E−10  6.4843E−13

Table 11 and table 12 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 2.025 / P1R2 2 0.695 1.795 P2R1 0 / / P2R21 1.405 / P3R1 1 1.405 / P3R2 1 1.375 / P4R1 1 0.525 / P4R2 1 0.625 /P5R1 1 2.585 / P5R2 1 2.785 / P6R1 1 1.975 / P6R2 1 3.105 /

TABLE 12 Number(s) of Arrest point arrest points position 1 P1R1 0 /P1R2 1 1.385 P2R1 0 / P2R2 0 / P3R1 0 / P3R2 0 / P4R1 1 1.095 P4R2 11.395 P5R1 0 / P5R2 0 / P6R1 1 3.255 P6R2 0 /

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 435 nm after passing the camera optical lens 30, respectively.FIG. 12 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 30. A fieldcurvature S in FIG. 12 is a field curvature in a sagittal direction, andT is a field curvature in a tangential direction.

Table 13 in the following shows values corresponding to the conditionsaccording to the aforementioned conditions in the embodiments.Apparently, the camera optical system in the present embodimentsatisfies the aforementioned conditions.

In this embodiment, an entrance pupil diameter (ENPD) of the cameraoptical lens 30 is 4.044 mm, an image height of (IH) is 4.000 mm, and afield of view (FOV) in the diagonal direction is 45.40°. Thus, thecamera optical lens 30 achieves large aperture, long focal length andultra-thinness, the on-axis and off-axis aberration is sufficientlycorrected, thereby achieving excellent optical performance.

TABLE 13 Parameters and Embodiment Embodiment Embodiment conditions 1 23 f6/f5 −10.00 −2.50 −5.95 d8/d10 9.93 6.40 3.01 f 9.159 9.143 9.100 f13.896 3.906 3.930 f2 −4.676 −4.749 −4.628 f3 43.122 29.157 79.330 f4−25.172 −14.840 −41.710 f5 10.789 9.777 11.217 f6 −107.881 −24.451−66.744 f12 8.571 8.326 8.974 FNO 2.25 2.25 2.25 TTL 9.210 9.278 9.221IH 4.000 4.000 4.000 FOV 44.00° 44.00° 45.40°

It will be understood by those of ordinary skill in the art that theembodiments described above are specific embodiments realizing thepresent disclosure, and that in practical applications, various changesmay be made thereto in form and in detail without departing from therange and scope of the disclosure.

What is claimed is:
 1. A camera optical lens, with six lenses,comprising from an object side to an image side: a first lens having apositive refractive power; a second lens having a negative refractivepower; a third lens having a positive power; a fourth lens having anegative refractive power, a fifth lens having a positive power; and asixth lens having a negative refractive power; wherein the sixth lensincludes an image-side surface being convex in the paraxial region,wherein the camera optical lens satisfies the following conditions:−10.00≤f6/f5≤−2.50;−22.86≤(R11+R12)/(R11−R12)≤−3.95; and3.00≤d8/d10≤10.00; where f5 denotes a focal length of the fifth lens; f6denotes a focal length of the sixth lens; R11 denotes a centralcurvature radius of an object-side surface of the sixth lens, R12denotes a central curvature radius of an image-side surface of the sixthlens; d8 denotes an on-axis distance from the image-side surface of thefourth lens to the object-side surface of the fifth lens; and d10denotes an on-axis distance from the image-side surface of the fifthlens to the object-side surface of the sixth lens.
 2. The camera opticallens according to claim 1 further satisfying the following condition:2.00≤(R7+R8)/(R7−R8)≤15.00; where R7 denotes a central curvature radiusof an object-side surface of the fourth lens; and R8 denotes a centralcurvature radius of an image-side surface of the fourth lens.
 3. Thecamera optical lens according to claim 1 further satisfying thefollowing condition:−5.00≤f4/f≤−1.50; where f denotes a focal length of the camera opticallens; and f4 denotes a focal length of the fourth lens.
 4. The cameraoptical lens according to claim 1 further satisfying the followingconditions:0.21≤f1/f≤0.65;−1.05≤(R1+R2)/(R1−R2)≤−0.34; and0.07≤d1/TTL≤0.22; where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; R1 denotes a centralcurvature radius of an object-side surface of the first lens; R2 denotesa central curvature radius of an image-side surface of the first lens;and TTL denotes a total optical length of the camera optical lens. 5.The camera optical lens according to claim 1 further satisfying thefollowing conditions:−1.04≤f2/f≤−0.34;1.35≤(R3+R4)/(R3−R4)≤4.22; and0.02≤d3/TTL≤0.07; where f denotes a focal length of the camera opticallens; f2 denotes a focal length of the second lens; R3 denotes a centralcurvature radius of an object-side surface of the second lens; R4denotes a central curvature radius of an image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length of the camera optical lens.
 6. The cameraoptical lens according to claim 1 further satisfying the followingconditions:1.59≤f3/f≤13.08;−0.23≤(R5+R6)/(R5−R6)≤1.17; and0.03≤d5/TTL≤0.09; where f denotes a focal length of the camera opticallens; f3 denotes a focal length of the third lens; R5 denotes a centralcurvature radius of an object-side surface of the third lens; R6 denotesa central curvature radius of an image-side surface of the third lens;d5 denotes an on-axis thickness of the third lens; and TTL denotes atotal optical length of the camera optical lens.
 7. The camera opticallens according to claim 1 further satisfying the following conditions:0.01≤d7/TTL≤0.10; where d7 denotes an on-axis thickness of the fourthlens; and TTL denotes a total optical length of the camera optical lens.8. The camera optical lens according to claim 1 further satisfying thefollowing conditions:0.53≤f5/f≤1.85;0.63≤(R9+R10)/(R9−R10)≤2.70; and0.05≤d9/TTL≤0.16; where f denotes a focal length of the camera opticallens; R9 denotes a central curvature radius of an object-side surface ofthe fifth lens; R10 denotes a central curvature radius of an image-sidesurface of the fifth lens; d9 denotes an on-axis thickness of the fifthlens; and TTL denotes a total optical length of the camera optical lens.9. The camera optical lens according to claim 1 further satisfying thefollowing conditions:−23.56≤f6/f≤−1.78; . . . and0.05≤d11/TTL≤0.16; where f denotes a focal length of the camera opticallens; d11 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length of the camera optical lens.
 10. Thecamera optical lens according to claim 1 further satisfying thefollowing condition:TTL/IH≤2.35; where TTL denotes a total optical length of the cameraoptical lens; and IH denotes an image height of the camera optical lens.